Can I just say how much I've adored the Gentarou/Hain CR? It's so RARE to see Fourze with negative CR and watching him get driven to near-rage is a thing of marvelous, marvelous beauty.

I also like what you do with Lyra, though I admit that maybe she's had a few too many antics with things in the Archives at this point, so it's probably best if she cuts back a bit. (Or possibly if it's explored that she's kind of gotten herself addicted, in kind of a "magical otherworldy artifacts are awesome, MUST HAVE MORE" way)

I haven't really interacted too much with the other three, so I can't properly offer in-depth thoughts.